Tag: nucleic acids

Questions Related to nucleic acids

Khorana et al synthesised RNA with copolymer of UGUGUGUGUG... It produced a peptide with alternate cysteine and valine. The codons for the two are

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. UGU and GUG

  2. UUG and GGU

  3. GUG and UGU

  4. UGG and GUU

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Correct Option: A

Reverse transcription was discovered by

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. Beadle and Tatum

  2. Temin and Baltimore

  3. Watson and Crick

  4. Khorana

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Correct Option: B

Find out the correct answers out of the following discoveries
1. Griffith-Transformation
2. Gamow-Triplet code
3. Miescher-Nucieic acid

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. 1, 2 and 3 correct

  2. 1 and 2 correct, 3 false

  3. 1 correct, 2 and 3 false

  4. 1 and 3 correct, 2 false

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Correct Option: A

Who proposed central dogma ?

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. Watson and Crick

  2. Beadle and Tatum

  3. Klug

  4. Crick

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Correct Option: D

Enzyme needed for production of DNA from RNA is

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. RNA polymerase

  2. Reverse transcriptase

  3. DNA helicase

  4. DNA polymerase

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Correct Option: B

Which is correctly matched ?

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. Ligase-Breaking DNA strand

  2. Flame cells-Roundworms

  3. Rous Sarcoma-Reverse transcriptase

  4. Thyroxine-Adrenal

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Correct Option: C

Information transfer from RNA to DNA is

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. Transcription

  2. Translation

  3. Replication

  4. Reverse transcription

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Correct Option: D

Central dogma of protein synthesis consists of

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. $DNA \overset{translation}{\rightarrow} mRNA \overset{transcriptionlation}{\rightarrow} Protein$

  2. $DNA \overset{transcription}{\rightarrow} mRNA \overset{translation}{\rightarrow} Protein$

  3. $RNA \overset{replication}{\rightarrow} DNA \overset{translation}{\rightarrow} Protein$

  4. $RNA \overset{transcriptions}{\rightarrow} mRNA \overset{translation}{\rightarrow} Protein$

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Correct Option: B

Reverse transcriptase is

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. RNA dependent RNA polymerase

  2. DNA dependent RNA polymerase

  3. DNA dependent DNA polymerase

  4. RNA dependent DNA polymerase

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Correct Option: D

Reverse flow of information in central dogma of molecular biology is

bio-chemistry nucleic acids central dogma transcription and gene expression molecular biology

  1. DNA RNA Protein

  2. Protein DNA RNA

  3. mRNA tRNA DNA

  4. RNA DNA Protein

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Correct Option: D